Petty Officer 3rd Class Justin Winters fires an M-240B machine gun during crew-served weapons qualification. U.S. Petty Officer 3rd Class Justin Winters, a Seabee attached to Naval Mobile Construction Battalion 5, fires an M-240B machine gun during crew-served weapons qualification at Camp Leatherneck, Afghanistan, on Oct. 16, 2010. Seabees with Naval Mobile Construction Battalion 5 are deployed to Afghanistan to execute general engineering, infrastructure construction and project management in support of Operation Enduring Freedom. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 266258-R-UVR59-211.jpg Photo Gallery